b12 injections alternatives 6 best vitamin supplements 2026, according to an expert The Ultimate Guide to Vitamin
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Others experience fatigue, especially early in treatment when their caloric intake drops significantly

Gastrointestinal disorders including Crohn's disease, coeliac disease, and previous gastric or ileal surgery can severely compromise B12 absorption

IJMS 21, 7698

References Kraus D, et al

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Both employed an oral AOD-9604 formulation [2]